Everyone needs to stay off of places like that! Craigslist, Kijii, Hoobly, Oodles they are all full of nothing but bad breeders and scammers! Just stay away and don't even look, we keep preaching good breeders, reputation, no puppymills, no BYBers! Free is NEVER really free!
You asked what else to do? Use the report FRUAD link if you are so compelled to go to places like to look. But in the end it is not a good idea to be looking for a new Yorkie on any of those sites.